$146.625
<h3>
Further explanation</h3>
<u>Given:</u>
- At a factory, a mechanic earns $17.25 an hour.
- The president of the company earns 6³/₄ times as much for each hour he works.
- The janitor at the same company earns ³/₄ as much as the mechanic.
<u>Question:</u>
How much does the company pay for all three people employees' wages for one hour of work?
<u>The Process:</u>
Let us prepare a model for a mechanic earns $17.25 an hour.

Let us do multiplication on a fraction at first.





Then we make a model for the president of the company who earn 6³/₄ (six and three quarter) times as much for each hour the mechanic works. Recall that 

Let's calculate how much the president of the company earns for each hour.



And we also calculate for the janitors who earn ³/₄ as much as the mechanic.

Finally, let's add up all earning to find out how much does the company pay for all three people employees' wages for one hour of work.

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Keywords: at a factory, a mechanic earns, $17.25 an hour, the president of the company, 6 3/4 times, each hour he works, the janitor, how much, pay for all, three people, employees'wages, model